Pepr Overly Permissive RBAC ClusterRole in Admin Mode
Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the “getting started” experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5.
- Products
- Not specified
- Affected versions
- Not specified
- Fixed versions
- Not specified
- CVEs
- CVE-2026-23634
- Confirmed fixed CVEs
- Not specified
- Updated in this feed
- 7 Nov 2026, 09:24 UTC · Revision 1
Source evidence
Pepr Overly Permissive RBAC ClusterRole in Admin Mode
core-osv · Original sourcePublished 16 Jan 2026, 19:14 UTC
Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the “getting started” experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5.
osv:CVE-2026-23634
Complete source record
{
"id": "a0842c026abe44a8d9fc1136a2a7b0c049d77136d6d28971437e8f555b65c809",
"url": "https://osv.dev/vulnerability/CVE-2026-23634",
"method": "structured",
"payload": {
"kind": "advisory",
"title": "Pepr Overly Permissive RBAC ClusterRole in Admin Mode",
"summary": "Pepr is a type safe K8s middleware. Prior to 1.0.5 , Pepr defaults to a cluster-admin RBAC configuration and does not explicitly force or enforce least-privilege guidance for module authors. The default behavior exists to make the “getting started” experience smooth: new users can experiment with Pepr and create resources dynamically without needing to pre-configure RBAC. This vulnerability is fixed in 1.0.5.",
"evidence": "osv:CVE-2026-23634",
"products": [],
"severity": "unknown",
"structured": {
"id": "CVE-2026-23634",
"aliases": [
"CVE-2026-23634",
"GHSA-w54x-r83c-x79q"
],
"metrics": [
{
"type": "CVSS_V3",
"score": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:N"
}
],
"affected": [
{
"ranges": [
{
"repo": "https://github.com/defenseunicorns/pepr",
"type": "GIT",
"events": [
{
"introduced": "0"
},
{
"fixed": "d4675a662b8602fcde7e4bf603432f2f133b1fd1"
}
],
"database_specific": {
"extracted_events": [
{
"range": [
{
"introduced": "0"
},
{
"fixed": "1.0.5"
}
],
"source": "AFFECTED_FIELD",
"strategy": "StringRangeExpression"
},
{
"range": [
{
"fixed": "d4675a662b8602fcde7e4bf603432f2f133b1fd1"
}
],
"source": "REFERENCES_TAG",
"original_tag": "v1.0.5"
},
{
"cpe": "cpe:2.3:a:defenseunicorns:pepr:*:*:*:*:*:*:*:*",
"range": [
{
"introduced": "0"
},
{
"fixed": "1.0.5"
}
],
"source": "CPE_RANGE"
}
]
}
}
],
"versions": [
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"v1.0.3",
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],
"database_specific": {
"source": "https://storage.googleapis.com/cve-osv-conversion/osv-output/CVE-2026-23634.json"
}
}
],
"modified": "2026-10-28T02:30:50.188954633Z",
"provider": "osv",
"references": [
"https://github.com/defenseunicorns/pepr/releases/tag/v1.0.5",
"https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23634.json",
"https://github.com/defenseunicorns/pepr/security/advisories/GHSA-w54x-r83c-x79q",
"https://nvd.nist.gov/vuln/detail/CVE-2026-23634"
],
"provider_metadata": {
"cwe_ids": [
"CWE-272"
],
"cna_assigner": "GitHub_M",
"osv_generated_from": "https://github.com/CVEProject/cvelistV5/tree/main/cves/2026/23xxx/CVE-2026-23634.json"
}
},
"related_cves": [
{
"value": "CVE-2026-23634",
"evidence": "/id"
}
],
"security_relevant": true,
"severity_evidence": null
},
"source_id": "core-osv",
"document_id": 518868,
"published_at": "2026-01-16T19:14:46.483+00:00"
}